General December Weather

Weather reports, prognostics, questions and discussion. Climate diagnostics, drivers, and outlooks. Weather stations and websites.
Orion
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Re: General December Weather

Unread post by Orion »

NZ Thunderstorm Soc wrote: Tue 20/12/2022 15:41 ...Up north for Christmas so the thunderstorm activity will be in the South Island, probably.
Back in the new year.
...
We'll be sure to let you know ;-)

Much drizzle and low cloud today, very wetting at times; cool for the time of year at 11° or 12°C for much of the morning.
Bradley
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Re: General December Weather

Unread post by Bradley »

Christchurch Airport has now recorded its wettest year on record with the 33mm recorded this morning :eek:
Razor
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Re: General December Weather

Unread post by Razor »

Bradley wrote: Tue 20/12/2022 19:06 Christchurch Airport has now recorded its wettest year on record with the 33mm recorded this morning :eek:
Meanwhile only 6mm on this side of town
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RODALCO
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Re: General December Weather

Unread post by RODALCO »

Couple of pics I took of the storm-cell over East Auckland this afternoon. Time between 1550 hrs and 1615 hrs.
2022-12-20_19-21-03.jpg
2022-12-20_19-20-23.jpg
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cbm
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Re: General December Weather

Unread post by cbm »

darcyplumb wrote:
Razor wrote: Tue 20/12/2022 13:04 Looks like Hamilton just got smashed by a severe TS
I’ve seen some photos on Facebook of hail about 10mm in diameter. Lots of hail accumulations on roadsides too.
Was away fishing today, but security camera showed a good downpour at 1:30pm and another at 4pm , but no hail. The sea surface temperature sure was reading high today, as measured by boat's depth sounder was most of time over 21 and as high as 21.8 which is as high as the same sounder ever measured during the Jan 2018 marine heatwave. This was off the Raglan bar and out to 40m depth. It's only measuring the very surface so was probably a very shallow warm layer that will mix out the next windy day, but still was notable.

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NZ Thunderstorm Soc
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Re: General December Weather

Unread post by NZ Thunderstorm Soc »

Yet, another "Clegg" today. >_<
Overcast and grey conditions with occasional showers of drizzle or light rain.
Not very warm, with it getting up to 13.2C. I noticed the neighbour had the fire going :crazy:
18.8mm for today.
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Re: General December Weather

Unread post by spwill »

A photo of the Cb that produced the thunder over east Auckland yesterday afternoon (seen from South Auckland) otherwise it was a mainly fine day for much of Auckland. The afternoon shower/isolated thunderstorm risk today looks like it will be over Waiuku/Pukekohe way.

Convergence over Auckland tomorrow Thursday, heavy showers + some thunderstorm activity on the cards
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Richard
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Re: General December Weather

Unread post by Richard »

Good photo. really shows the height in that storm.

Ended up 52mm over the last few days, just need some sunshine now.
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Re: General December Weather

Unread post by spwill »

A chance of thunderstorms for your area on Friday Richard.
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Richard
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Re: General December Weather

Unread post by Richard »

Yes, I like these sort of setups which Friday looks to likely be, slow moving storms
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Storm Struck
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Re: General December Weather

Unread post by Storm Struck »

It certainly is nice to see the sun after 3 days of overcast skies, maximum of 65mm at the airport since Sundays rain.
Yesterday the rain in the morning was very steady and thick at times which really ramped up those totals.
Should be a dry few days with just the chance of a shower tomorrow, and good showers thunderstorms on Friday for inland areas maybe a few out on the plains too.
Christmas eve and Christmas day provide simular set ups except more inland and less of a thunder risk than Friday.
A system looks set to sweep down over the country from the 29th and into New Years Eve.
Canterbury, home of good rugby and severe storms
harleyb
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Re: General December Weather

Unread post by harleyb »

We had a day of thick, fine drizzly rain on Saturday with not a breath of wind, and I heard reports of a few trees in our area being damaged/uprooted, presumably as a result of the weight of water accumulating on them with no wind to shake it off. I did notice some trees and shrubs at home were heavily loaded with water and bending over. I guess it's possible for some trees to get damaged in this way if there's no wind and the rain that's falling is very fine (so that raindrops don't knock off what's already accumulated) -- but I've never heard of this happening before. Sort of like snow loading but with rain instead of snow. Weird!
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Richard
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Re: General December Weather

Unread post by Richard »

Conifer trees can hold a lot of water. Remember as a kid my old man had a small Conifer bush hanging over a pathway, one day when it was loaded with heaps of rain I tied a rope to a branch and waited for him to walk under, a quick pull on the rope and he was drenched, the old bugger went clean off, I dont know why he couldn't see the funny side.
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Re: General December Weather

Unread post by jamie »

A few places around Morrinsville picked up 100mm in the storm yesterday.


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Re: General December Weather

Unread post by NZ Thunderstorm Soc »

Good to see the claggy drizzley rubbish of the past few days clear, allowing the sun to shine.
Some hefty clouds around though.
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Richard
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Re: General December Weather

Unread post by Richard »

Saw no sun here, a few showers this afternoon
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Re: General December Weather

Unread post by NZ Thunderstorm Soc »

Thank goodness the clagg of the last few days cleared away so I could mow the lawns today.
Some germanium plants were droopy after the recent constant drizzle and grey skies plus other plants with excessive raindrops over them.
A partly cloudy sky did develop with some sunny breaks which were OK for me to mow the lawns.
Today's maximum was 18.8C.
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Tornado Tim
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Re: General December Weather

Unread post by Tornado Tim »

Quite an active day expected in parts of NZ:
metservice wrote:A large trough lies over the country. A low within this trough is west of the North Island. These features bring humid and unstable conditions to many places, and combined with light winds and afternoon warmth thunderstorm development is likely.

There is a low risk of afternoon and evening thunderstorms over most of the country, expect the far north and south of the North Island and about some of the north and east of the South Island.

For Taranaki and the waters north of Farewell Spit, there is a moderate risk of thunderstorms through the whole day, which may be accompanied by localised heavy rain with intensities of 10 to 25 mm per hour, hail of 5 to 10 mm diameter and the low risk of small tornadoes.

About eastern Northland and Auckland, south of the Bay of Islands, there is a moderate risk of thunderstorms this afternoon and evening, accompanied by localised heavy rain of 10 to 25 mm per hour, and possibly more, and small hail.

Over a wide area of the North Island from Waikato to Manawatu and the Tararua District, as shown on the chart, there is a high risk of thunderstorms this afternoon and evening, and a moderate risk that some of these thunderstorms become severe. Localised heavy rain with intensities of 10 to 25 mm per hour and hail of 10 to 20 mm in diameter are possible, and if the thunderstorms become severe, downpours of 25 to 40 mm per hour and small tornadoes are possible.

For inland areas of the South Island, there is a moderate risk of thunderstorms, but high risk about inland Southland and Otago. These thunderstorms may bring localised heavy rain with intensities of 10 to 25 mm per hour and there is a moderate risk of severe thunderstorms for inland Southland and Otago with downpours of 25 to 40 mm per hour. Hail of 5 to 15 mm in diameter is possible in the high risk area, with small hail possible elsewhere.
thunderstormOutlookImage.png
Thunderstorm Watch issued,
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spwill
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Re: General December Weather

Unread post by spwill »

Some development around Auckland at the moment and some big Cbs visible to the southwest, coastal Waikato way.
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Re: General December Weather

Unread post by spwill »

Cb northwest of Auckland currently looking nice in the clear sky.
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Storm Struck
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Re: General December Weather

Unread post by Storm Struck »

Tomorrow is looking quite good especially for inland areas and in the high country, probably the first high risk for the season.
Once again it's the theme of the year the convergence zones, but good moisture too and high cape values.
There will definitely be a few showers for the city and the risk these could be active too.

Saturday and Sunday both produce thunderstorm risks, probably a little more on the eastern plains for Saturday though.
Canterbury, home of good rugby and severe storms
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David
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Re: General December Weather

Unread post by David »

Work colleague reports thunder down Takanini way. Looks like some quite strong cells developing down there.
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jamie
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Re: General December Weather

Unread post by jamie »

Epic storm came through here earlier. Constant thunder and hail.


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harveyt86
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Re: General December Weather

Unread post by harveyt86 »

Will see if we get anything here this afternoon/early eve. Cells have been developing overhead as they move south/southeast. Nice to watch but only some sporadic large drops so far. Not quite far enough south!
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Nev
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Re: General December Weather

Unread post by Nev »

Report of a possible tornado in south Taranaki at about 2pm this arvo...

https://www.stuff.co.nz/national/130844 ... h-taranaki
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